METHOD AND DEVICE FOR MEASUREMENT OF EYE CONGESTION DEGREE

PROBLEM TO BE SOLVED: To determinatively and easily measure the eye congestion degree by photographing the white part of the eye under a prescribed condition and digitizing the photographed data. SOLUTION: A shielded part 20 of a photographing mechanism 1 is made abut on the left eye of a subject to shield the surrounding of the eye to cut off invasion of light into the eye ball surface from outside, and light from a light source 40 is passed through a light transmitting part 30 to make the light an indirect light and cast on the eye in all surrounding directions. Under such a condition, an image of the eye is taken by an imaging part 50. Obtained photographed data are set to a calculation mechanism through a cable. The area of the white of the eye is selected from the photographed data. R, G, and B values on each pixel are read in respectively and their sizes are evaluated to digitize them into one of red or white. Thus a pixel finally discriminated red corresponds to a congestion part and the rate (%) of the number of pixels finally discriminated red against the total number of pixels in the selected area is calculated. The value is made the eye congestion degree.